ABC is a straight line. The length of AB is four times the length of BC.
AC = 75 cm.
Work out the length of AB.

60

Step-by-step explanation:

so 4 of BC will make a AB, so AC =5 of BC =75

therefore BC=75/5=15

If BC=15 and AB=4*BC=4*15=60

i don't know, but that looks pretty bad. my school passed us unless we failed in all the subjects, but idk abt ur school's rules.

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